アバターファイル選択でimage以外は表示しないように (#5098)

src/client/app/desktop/api/update-avatar.ts

@@ -91,6 +91,7 @@ export default ($root: any) => {
 			? Promise.resolve(file)
 			: $root.$chooseDriveFile({
 				multiple: false,
+				type: 'image/*',
 				title: locale['desktop']['choose-avatar']
 			});
 

src/client/app/desktop/api/update-banner.ts

@@ -91,6 +91,7 @@ export default ($root: any) => {
 			? Promise.resolve(file)
 			: $root.$chooseDriveFile({
 				multiple: false,
+				type: 'image/*',
 				title: locale['desktop']['choose-banner']
 			});